I've had too many QC problems with Rugers to suggest them as a 'first' revolver. In addition, none of the .38/.357M SP101s have a barrel over 3" or adjustable sights. I know new S&Ws are a bit more dear - but worth it, in my opinion. I would suggest something in a 4" barrel - with adjustable sights, so you can 'tune' it for your ammo. You cannot beat the utility - and frugal nature - of a .38 Special. As a .357 Magnum chamber will also take .38 Specials - and without worrying over whether they are '+P' or not, get a .357 Magnum. The best buy in a recent S&W like this is the 620. It is a 7-shot L-frame, actually identical to a 686+ except for the barrel. The 620 has a partially lugged barrel - which looks more 'traditional' - and, in my hand, points better than a full lugged barrel, like the standard six shot 686 or the 7-shot 686+. They all share the same gripframe and OEM Hogue grips, as well as the same lockwork. The HKS #587 Speedloader fits the 7-shooters, too. The 620 will be a few bucks cheaper than the 686+.
Now, if you have a .45 ACP bottom feeder - and want to stay with that caliber, consider a S&W 625JM - a .45 ACP revolver. One caveat re your 1911, etc - the revolver will have a bit more felt recoil, as there is no action to work. Of course, it is a true 'big bore', even if it's ammo is widely available and reasonable. The .38s will bounce less - and be even more reasonable.
Of course, a new S&W is an 800# call away from a free pick-up and delivery, should any work be needed.
Stainz